What’s Vulnerable › Vulnerabilities

CVE-2017-5461

• Severity: critical (CVSS 9.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 4.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-05-11 · updated 2026-06-17
• Weakness: CWE-787

Description

Mozilla Network Security Services (NSS) before 3.21.4, 3.22.x through 3.28.x before 3.28.4, 3.29.x before 3.29.5, and 3.30.x before 3.30.1 allows remote attackers to cause a denial of service (out-of-bounds write) or possibly have unspecified other impact by leveraging incorrect base64 operations.

Affected products

• Mozilla Network Security Services: before 3.21.4; from 3.22 (excl.) before 3.28.4; from 3.29 before 3.29.5; from 3.30 before 3.30.1 — fixed in 3.21.4, 3.28.4, 3.29.5, 3.30.1

How to fix

Upgrade to a fixed version: Mozilla Network Security Services 3.21.4, 3.28.4, 3.29.5, 3.30.1. Check the vendor advisory for mitigations.

References

• http://www.debian.org/security/2017/dsa-3831
• http://www.debian.org/security/2017/dsa-3872
• http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html
• http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
• http://www.securityfocus.com/bid/98050
• http://www.securitytracker.com/id/1038320
• https://access.redhat.com/errata/RHSA-2017:1100
• https://access.redhat.com/errata/RHSA-2017:1101
• https://access.redhat.com/errata/RHSA-2017:1102
• https://access.redhat.com/errata/RHSA-2017:1103
• https://bugzilla.mozilla.org/show_bug.cgi?id=1344380
• https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.21.4_release_notes

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